Automatic musical instrument



June 5, 1928.

. 1. E. GRAF I AUTOMATIC MUSICAL INSTRUMENT 3 Sheets-Sheet 1 Filed June 30, 1923 June 5. 1928.

iled June so, 1923 s Sheets-Sheet 2 3 Sheets-Sheet 5 NNN J. E. GRAF AUTOMATIC MUS ICAL INSTRUMENT Filed June so, 1923 Patented June 5,1928.

UNITED STATES PATENT} orrice.

JOHN E. GRAIQOF NORTH TONAWANDA, NE-W YORK, 'ASSIGNOR TO THE RUDOLPH wURLlTzER MANUlACTURlNG COMPANSL OF NORTH TONAWANDA, NEW YORK, A

' conronn'rion 01 NEW YORK,

AUTOMATIC MUSICALv INSTRUMENT.

Application filed June 30,

This invention relates to improvements in automatic musical instruments;

Ithas for its chief object to provideinr proved means for automatically reversing the roll-driving mechanism upon the completion of the playing of the music-sheet.

Anotherobject of the invention i-s to provide automatic means forrestoring the rolldriving mechanism to playing positionupon thev completion of the rewinding of the music-sheet I A further'object is the provisionof manually-controliled means for stopping the playing of the instrument at will.

A still further object of the invention is toprovicle anautomatically-operated instrument of this character which is reliable and etlicient in operation and which is provided withno delicate parts liable to get out of order or out of adjustment.

In the accompanying drawings:

Figure 1 is a front elevation, partly in section, of a tracher-box and roll-driving mechanism embodying my improvements, the pa rt's being shown intheir playing position.- Figure 2 is a horizontal section on line 22, Fig. 1. Figure 3 is a fragmentary rear view, partly in section of the roll-reversing mechanism, showing the parts in their playing position; Figure l is a similar view, showing the parts in. position for rewinding the music sheet. Figure 5 is a transverse vertical section on line 5 5, Fig. 2.. Fi'g-ure 6 is an enlargedsectional detail. view, partlyin perspective, of the actuating pneumatic and the pallet valve assembly. Figure 7 is a transverseyertical section of the pneumatic in the plane of line 77, Fig. 6, together with detailed sectional pers spectiveviews of the rewind cut-01f block assembly, the rewind cut-off slide assembly, andthe tracker board and note sheet connectedtherewith. Figure 8 is a horizontal section. on line 8-8,-Fig. 7. Figure 9 is an enlarged transverse,section on line 9-9, Fig. 2. r 1 p I Similar characters of reference indicate corresponding parts throughout the several views. y

In its general organization, the device comp-risesthe usual roll frame including the tracker board, music roll and take-up roll,

transmission mechanism for said. rolls, an oscillatingdr ving shaft shiftable intoand 1923; seen is. 648,691.. I

out of operative engagement with said transmission mechanisms, respectively, a. clutch I and a reverse lever therefor associated with one of the transmission mechanisms, a re wind action assembly or pneumatic, a flexible. connection between the latter, said reverse lever and said driving shaft, the pneumatic being automatically actuated in one direction to eflect the rewinding ofthe music, sheet when the selection is completed, automatic means for effecting the actuation of the pneumatic in the opposite direction or to playing position upon the completion of the rewinding of the music-sheet, and manually-controlled means for reversing and stopping the instrument at will. I

1n the drawings, indicates a wind chest of any suitable and well-known construction, and B a pump or main suction bellows operated in the usual manner.

Mounted in the usual frame 10 is the tracker board 11 the music roll 12 and the take-up roll 13, the numeral 14 indicating the perforated music-sheet. The right hand ends of the roll-spindles are engaged with the customary clutch-members or heads15, 16, secured to the take-up and rewind shafts 17, 18, respectively, which are journaled in the adjacent side wall of said frame. The rewind shaft 1.8 is provided wit-hia spur gear 19 which meshes with a similar gear 2-0v secured to a countershaft2l having a driven member or friction. disk 22 at-its outer end. Loosely mounted on the take-up shaft 17 and held against longitudinal movement thereon is a gear 23 which is in constant mesh with av pinion 24 fixed on a horizontal shaft 25 supported by a bracket 26 secured to the adjacent wallof the roll-frame. At

its outer end said horizontal shaft carries a driven. member or friction disk 27. A grooved clutch collar 28 is splined' on the outer end of the rewind shaft and carries clutch pins 29 adapted to engage similar shaft is journa-led intermediate its ends in an oscillating frame 36 pivoted at 37 tothe outer end of a suitablebracket 38 projecting from the roll-frame 10. The fulcrum 37 of thisoscillating-frame is arranged transversely of -the friction disks and is located ina plane between the shafts of the latter, so that when the shaft 33 is rocked in one direction the upper fi'iction wheel 34engages theconipanion friction disk 22 and the lower friction wheel 35 clears the correspondingfriction disk 27, while when said shaft is *rocked in thexopposite direction, the position. of said wheels is reversed; The constant rotation of the driving shaft 33 in'the same-direction thus causes the music-sheet to' be'ztaken up'or rewound according'as said shaft is rocked, in one or the other direction. Said shaft may be driven from a countershaft 39 through the medium of bevel gears 40, 41, the countershaft being driven by an electric motor or other means,

not shown. 1

At its lower end the shaft 33 is provided with a coupling'hea'd or block 2 connected by oppositely-extending links 43, 44 to the lower end of the shifting lever 31 and to the movable board 45 of a rewind pneumatic 46,

respectively. That end'of the link 43 which is connected to the shifting lever is provided with a longitudinal slot 47 in which its pivot pin 48 is free to move, thus permitting said lever to benioved manually sufficiently to disengage the clutch collar28 from the gear 23 without changing the position of the shaft 33 orthe pneumatic 46. This manual movementof the shifting-lever is effected by a horizontal slide bar 49 provided at one'end witha knob or handle50 and at its other end with an opening 51 into which the lower end of a vertically-swinging rock lever 52 projects. Said rock lever is fulcrumed intermediate its. ends on a bracket 53'secu'red to the right hand wall of the roll-frame 10, its upper arm being adapted to bear at its outer edge again-st the opposing inner side of the pivot pin 48, as clearly shown'in Fig. 3. Thus, when the device is -'in'its playing position shown inFigs. 1, 2

and 3, and it is "desired to stop the rolls 12,

13' to arrest the travel of the music sheet, .the slide bar 49 is pulled outwardly far. enough to cause the rock lever 52 to move the shifting lever 31 a sufiici'ent amount to release the clutch collar 29 from engagement with the gear- 23, as shown by dotted lines in'Fig. 3,.theshaft 33'and rewind pneumatic being unaffected and remaining in their operative playing position.

In this position of theparts the music and take-up rolls can be turned by hand independently of the driving and. rewind mechanism, for tuning purposes, and the music roll can be replaced byanother without stopping the motor.

A coil spring 54 tends constantly to hold the driving shaft 33in its normally operative playing position, while a similarspring 55 applied to theshifting lever 31 tends -to "hold the clutch collar 28 in engagement with the gear 23, r I When the shaft 33 is inposition for playing with its friction wheeli35 in contact with the friction disk 27 of the take-up mechanism, the pneumatic 46 is in its in-, v

tion wheel 34 into engagement with the companion disk 22, whereby motionis transmitted to the music-roll shaft 18' to rewind the music sheet. The automatic means, whereby this reversal of the partsto their rewind position is accomplished, are pref-. I

' 9o Near one end thereof, the'tracker board 11'is provided with a rewind hole 56 with erably constructed as follows:

which 'a corresponding perforation at the. end of the music sheet is adapted to register when the playing of the roll is com pleted. This hole is connected by a tube '57 with a duct 58 in the stationary; board 59 of the pneumatic. Mounted on this stationary board, preferably at its lower end, are

upper and lower unit valve-blocks 60, 61, of

well known construction, each containing a lower pouch or suction chamber 62, an upper valvechamber 63 communicating with 'theatmosphere through a flushing port 64,

a vacuum port 65 connecting said chambers with each other, and a duplex-valve 66 located in the upper valve chamber which. cooperates with said vacuum and vent ports. In the bottom of the lower chamber'62 is the customary valve operating pouch 67 and opening into such chamber beneath the latter is an inlet passage 68 adapted for communication with the atmosphere, as 'will' hereinafter. appear. The valve chamber 63 of the. lower valve block 61 communicates with the interior of the pneumatic 46 through a flushing port 69 while the corresponding valve chamber .of r the upper valve block 60 is adapted to communicate with the atmosphere through an upright channel 70 in the stationary board 59- of the pneumatic; a lower horizontal port 71 leading therefrom to a pouchchamber 72 formed in a valve block 73 secured to the outer side of said board, and an upper port .7 4 leading. from said'pouchphamber to the duct 58, which, as before stated, communicates with the rewind hole 56 of the tracker board. A valve diaphragm 75 is arranged over the ports 71,74, as shown in Figs. 6

and 8, and a port 76 in the valve-block 73 communicates at one end-with the interior of the pneumatic through a passage 77, while its other end leads to. the pouch chamber 72 in rear of said pouch valve. Thesu ction chambers 62 of the upper and lower valve blocks 60, 61 are connected by a maniwitha suction=controlling orcut off valve block 80 communicating withvthe suction bellows'by a trunk 81. This valve block contains ports 82,83 controlled by a slidevalve 84 having a rod '85 connected to a lat eralextension'86 of the slide bar 49, as shown in Figs. Qand 3,-said ports being in communication when-the instrument is play.- ingandduring the automatic rewinding operation of the music sheet tofurnish thenecessa-ry suction to the pneumatic 46 and associated parts. lVhen the rewinding operation is effected manually 'through the shifting of the slide bar t9, the slide valve S l-is movednto its closed positionto cut off.

suctionto the rewind pneumatic.

The air inlet passage 68, which opens into the pouchchamber 62' of the lower unit valve block- 61, .is; connected by a tube 87 with the duct58. in the stationary board of the pneumatic. lVhen the rewind perforation in the music sheet 14 uncovers the hole 56- in the trackerboard, atmosphere is admitted thereto and to the pouch chamber of the valve block 61 throughth-e medium of the tube 57, duct 58 and tube87, whereupon the corresponding duplex valve 66 is raised and; the pneumatic 46 is exhausted or col lapsed to move the shaft 33 to its reverse positionand shift the lever 31 to release the clutch collar 28, from the gear 23, thus rewinding the music sheet. matic is exhausted, the pouch chamber 72 of the valve block 73 is likewise exhausted" through the port 7 6 and passage 77, thereby raising the pouch valve 7 5 and establishing communication between the ports 71, 74, as shown. by dotted lines in Figs. 6 and 8.

. Said'lowcr duplex valve. is retained in its position at this time.

raised position tokeep the pneumatic collapsed during the rewinding of the music sheet by atmosphere admitted through the port 64 of the upper .valveblock 60, the duplex valve of the latter being in its lowered From the port 64, the atmosphere passes through the channel 70, ports 71, 7 duct 58 and tube 87 to the port 68 of the lower valve block 61, the latter thus acting: inthe capacity of a retaining valve forholding the pneinnatic collapsed, while the upper valve 60- functionsas a re-. leasing vafl e to again permitthe expansion of the pneumatic at the end of the rewind ope-ration. a I 1 In order to silence the instrumentduring Vhen the pneu- I the rewinding operation, means. are providccl for cutting off the suction to the wind chest simultaneously with the act oicollapsing the. pneumatic l6.-v In the example shown in the drawings, particularly l igs.v 1, 2,3,

4 and 7, a controlling valve block 88 is pro vided having a vacuumport 89 and an air inlet port 90 including a branch 91 which is adapted to conm'iunicate with the atmosphere through av channel 92: located between said vacuum and'inlet ports, as shown in Figs. 7 and 9. The vacuum port 89 is connected bya tube 93 with a horizontal pas-' sage 94 in the stationary board 59 of the rewind pneumatic .46 .which communicates with the suction chamber 62 of the lower unit valve block .61 through the port. 69- .A

diaphragm valve or pouch 95 is arranged in.

the channel 92 between the opposing ends of the vacuum port and the branch port 91 for controlling the admission of atmosphere to the latter, this valve being held down by.

atmospheric pressure admittedthrough the port 64 of the lower valve block 61 to keep the branch port closed while theinstrument is playing. The inlet port 90 is also connected by a tube .96 with a suction cut-off pouch block 97 to which is connected the trunk 98 leading from the suction bellows B and the trunk 99 leading to the wind chest y A. These trunks open into a pouch chamber 100 and communication between them is con trolled bya pouch valve. 101 arranged opposite the mouth of the trunk 99 whicheiitends into said chamber, the tube 96 leading to the outer, side of the pouch valve, as shown at the left in Fig. .1. Thus, when the pneumatic 46. is collapsed and the duplex valve 66 of the lower unit block6l is raised to establish communication between the suction chamber 62 thereof and the vacuum port 89, suction lifts the diaphragm valve 95 oil the branch port. 91, whereupon atmosphere is admitted thereto through the channel 92 and thence to the tube 96, causing the pouch valve 101 to move from the full. line position to the dotted line position shown in Fig. 1, and cutting off the suction supply to the wind chest. I a I I The air inlet port 90' of the valve block 88 preferably extends from one side thereof to by a pull Ont-he slide bar 49 to simultaneously shift the clutch lever 31 to its released positionandthe slide valve 84 to its closed position. Thus, when the spring'valve 102 is opened, atmosphere enters its port 90 and closesthe pouch valve 101 to'cut oif suction to the .windchest and silence the instrument,

exactly in the'same manner as the automatic control is eflected. 7 7 i The means for automatically restoring the parts of the instrument to playingposition after the completion of therewindingopera-- I tion are preferably constructed as follows:

Co-operating with the take-up roll 13 is a vertically-swinging pawl orfinger 103 piv-. oted at its front end to an arm 104 formed 011 a rocking sleeve 105 mounted on a horizontal 'rod106 parallel with said roll and supported at its ends in the roll-frame 10, as shownin Figs. 1 and 2. This pawl bears on the convolutions of the music sheet opposite a transverse groove or recess 107 .in the periphery of the take-up roll, the pawl resting on the latter by its own weight and being adapted to engage the abrupt forwardly-facingshoulder 108 of the recess as soon as the latter is uncoveredby the complete unwinding of the music sheet'and thus rock a the sleeve 105 in a direction away from the roll. Actuated by the rocking action of said sleeve'isa pallet-valve 109 fulcrumed at 110 to a valve-block 111 containing an air inlet port112 controlled by said valve; A connecting rod 113 is joined at one end to a' crank arm 114 on the sleeve 105 while its other end engages a fork 115 in the upper end of the pallet valve and passes freely through an opening 116 in the extension;

117 of the valve-block. Applied to the end of this connecting rod is a stop or collar 118 for limiting the opening movement of the pallet valve and between the opposing faces of the latter and said extension 117, the rod has an abutment collar 119 which engages the valve and forces it open whenever the rod is pulledforwardly, as by the force exerted by the take-up roll against thejpawl 103. {*Acoil spring 120 applied to a'screw 121 and interposed between the head thereof and the outer side of the pallet-valve tends constantly to hold the latter in its closed position shown in Figs. 5 and 6. The

valved-port 112 is connected by a tube 122 with the air inlet 68 leading beneath the valve-operating pouch 67 of the upper unit valve block 60, as shown in Fig. 6. As soon as the'recess 107 is uncovered by the complete unwinding of the music sheet, the pawl. I

103 drops into interlocking engagement therewith, the rotation of the roll causing the pawl to rock in the proper direction to effect the opening of the pallet-valve'109,

thus admitting atmosphere to the inlet 68 of said upper valve-block which lifts the pouch 67 to raise the corresponding duplexvalve '66, closingthe air inlet-port 64 and opening the vacuum port to connect the channel. with the suction chamber 62, thereby closing the pouch valve and causing the pouch 67 and the duplex-valve 66 of.

the lower valve block 61 to drop by gravity,

cutting oil the suction to the pneumatic 46,

whereupon the latter is expanded by the spring 54 and the driving mechanism is shifted to playing position. Simultaneously with this action, atmosphere is likewise admitted through the inlet port 64 of the lower unit valve block60to the port 69, passage 94 and tube 93 leading to the valve block 88 to restore the diaphragm valve 95 to its origi-v nal'closed position, thereby closing the port 7 with the'take-up roll gear 23, the lower fri ction wheel 35 is in driving contact with the friction disk 27 so as to impart motion to the take-up roll, these parts being normally retained in this position by the springs 54 and At this timethe slide-bar 49 is in its a 55. innermost position, the duplex valves 66 of the upper and lower unit valve blocks 60, 61 are in their lowered positions, the valve dia phragms 75 of the valve block 73 is closed, the slide valve 84 of the'valve block is opera-the diaphragm valve 95 and the spring valve 102 of the valve block 88 are closed, the pouch valve 101 of the suction cut-off block 97 is open and the pallet valve 109 of the valve block 111 is closed. When the playing of the roll is completed, the automatic. rewinding of the music sheet takes place by the rewind hole-56 in the trackerboard being uncovered by registration therewith of the corresponding rewind perforation in the music sheet, whereupon the pneu-;

matic 46 is collapsed, as previously" de-u scribed,.whioh movement, through theme dium of the coupling head 42, links 43, 44

and clutch lever 31,1'eleases the clutch collar 28 from engagement with .the take-up gear 23 and rocks the driving shaft 33 in the proper direction to withdraw its friction wheel 35 fromthe companion disk 27 and bring its friction wheel 34 into engagement with thecompanion disk 22-to unwind the music sheet on the music roll 11. Simultaneously with the collapsing ofthe pneumatic, suction acts on the diaphragm valve 95 to admit atmosphere to the inletport 90 of the valve block 88 and cause the pouch valve 101 to close and cut off suction betweenthe suction bellows and the wind chest, so that the instrumentrema-ins silent during the rewind operation. I

When the music sheet is completely unwound from the take-up roll 13, the pawl 103 drops by gravity into the locking recess 107 of said roll, thereby rocking the sleeve 105 in the proper direction to cause the pallet valve 109 "of the valve block 111 to be 'opened, admitting atmosphere to its port 112 and cutting off suction to the pneumatic in the manner previously "described, the spring 54 thereupon returningthe pneumatic to its inflatedpositi'on and restoring the partscontrolled thereby to their normal playing position. Upon the inflation of the pneumatic, :atmospheric pressure admitted to the port (59,passage 94, tube 93 and port '89 depresses the diaphragm valve 95, cuttin'g'off atmosphere; to the air inlet port 90 and. allowing the pouch valve 101 to open and-establish communication between the suction bellows and wind ohem to permit the instrument to The manual act of stopping the playing of the instrument is accomplished by pulling the slide bar 49 outwardly, which movement shifts the clutch lever 31 in the proper direction to release the clutch collar 28 fromthe gear 23, the rock lever 52 being also actuated to move the spring valve 102 to its open position and admit atmosphere to its port 90 for the purpose of closing the pouch valve 101 and cutting off suction to the wind chest and the slide-valve 84 being likewise moved to its closed position to cutoff .suction't-o the pneumatic 46, in thein'anne'r previously described. This movement of the slide bar does not affect the position of the driving shaft or the pneumatic owingto the pin and slot connection 47, 48 between the clutch actuating lever 31 and the link 43. i

It will be understood that various changes in the construction and arrangement of the parts may obviously be made within the scope of the appended claims, and I therefore do not Wish to be limited to the particular embodiment of the invention hereinv shown and described.

I claim asmy invention:

1. In an instrument of the characterdescribed, I the combination of take-up and music rolls, transmission mechanism includ ing a driven member for each roll, one of said mechanisms including a roll-shaft having a gear loosely mounted thereon and a shaft for its driven member carrying a pinion in constant mesh with said gear, an oscillating driving shaft carrying driving elements arranged to alternately engage the driven members of said transmission mechanisms, respectively, a clutch for operatively connecting said loose gear with its roll-shaft, a shiftable lever for said clutch arranged on one side of the driving shaft, a pneumatic said gear being loose said gear being loose on the disposed on the opposite-side of said shaft,

and means extending in opposite :directions said clutch, a pneumatic, and links connecting the driving shaft with said clutch lever and said pneumatic, the connection of that link with the clutch lever being constructed to permit movement of the latter independently of the driving shaft and the pneumatic.

3; In an instrument of the character described, the combination of take-up and music rolls, a music-sheet-, transmission niech-anism including a drlven'imember for each roll, one of said transmission mechanisms including 'a roll-shaft, a shaftfor its driven member and a constantly meshing gear and pinion on said shafts, respectively, on the roll-shaft, a

shiftable driving shaft carrying driving elements arranged to alternately engage the driven members of said transmission mecha nisms, respectively, a clutch included in the transmission mechanism having said loose gear and mounted on the roll shaftthereof, means for maintaining said driving shaft and said clutch intheir normally operative playing positions, and automatic means controlled by the music sheet and operatively connected to the driving shaft and the-clutch for shifting these parts to their rewind positions when the playing of the music-sheet is completed. v

4. In an instrument of the character described, the combination of take-up and music rolls, a music sheet transmission mechanism including a driven .member for each roll, one of said transmission mechanisms including a roll-shaft, a shaft for its driven member and a constantly -me'shin'g gear and pinion on said shafts, respectively, I roll-shaft, a sliiftable driving shaft carrying driving elements arranged to alternately engage the driven membersof said transmission mechanisms, respectively, for winding and rewinding the musicsheet, a clutch included in the transmission mechanism having said loose gear and mounted on the roll shaft thereof, means foryieldingly maintaining said driving shaft and said clutch in their normally operative playing positions, and pneumatic means for shifting the driving shaft and the clutch to their rewind positions.

In an instrument of the character described, the. combination of' take-up and musicrolls, a music-sheet, transmission mechanism including a driven member for each roll, one of said transmission mechanisms including a roll-shaft, a shaft for its drlveninember and a constantly meshing gear and pinion on said shafts, respectively,

said gear being loose on the roll-shaft, a shiftabledriving shaft carrying driving elements arranged to alternately engage the driven members of said transmission mechanisms,respectively, for winding and rewinding the 'music' sheet, a clutch iricluded in the transmission mechanism having said loose 'each roll, one of said transmission mechatheir rewind p ositions,andmeans Controlled I gear and mounted on the roll shaft-thereof, means formaintaining said driving shaft and said clutch in their normally operative playing positions, automatic means controlled by the music sheet and 'operatively connected to the driving shaft and the clutch for shifting these parts to their rewind positions when the playing of the music-sheet is completed, and means controlled by the take-up roll for releasing said automatic fmeans t'oweffec't the return of said driving shaft and said clutch to their normal positions. T 1

In an instrument of the character described, the combination of take-up and music rolls, a music sheet, transmission mechanism including a driven member for nisms including a roll-shaft, a shaft for its driven member and a constantly meshing gear: and pinion on said shafts, respectively,

said gear being loose on the roll-shaft, a shiftable driving shaft carrying driving elements arranged to alternately engage the driven members of said transmission mechanisms,"respectively, for winding and rewinding the music sheet, a'clutch included in the transmission 'inechanism having said loose gear and'mounted on the roll-shaft thereof, a pneumatic, "means for connecting said pneumatic with said driving shaft and said clutch, means controlled by the music-sheet for causing the collapse of said pneumatic to shift-said driving shaft and said clutch to by the take-up roll for causing the expansion of the pneumatic to shift said driving shaft andsaid clutch to their playing positions.

' 7. In an instrument of the character described, the combination of. take-up and music rolls, transmission mechanism includinga driven'member for each roll, a shiftable driving shaft carrying driving elements arranged to alternately engage the driven members of said transmission mechanisms,

respectively, a clutch for one'ofsaid transmission mechanisms, a. rewind pneumatic,

means for connecting said pneumatic with said driving shaft and saidclutch, and valve mechanisms for controlling said rewind pneumatic, one 0fsa1d-valve mechanisms ineluding-means for retaining the pneumatic in its collapsed position during'the rewinding of the music sheet and the other valve mechanism including 'means for releasing the pneumatic to its expanded playing posinisms, a rewind pneumatic connected with the tracker-board of the instrument, means for connecting .said pneumatic with said driving shaft and said clutch, valve mechanisms'applied' to said pneumatic for controlling the same, each of said valve mechanisms including a suction chamber, a-

valve chamber communicating by ports with said suction chamber and the atmosphere, avalve controlling said ports and a chamber communicating with the atmosphere and containing a diaphragm for actuating the valve, means for connecting the diaphragm chamber of one of said valve mechanisms with the tracker-board, and a valve-controlling the admission of atmosphere to the diaphragm chamber of the other valve mechanism, said controlling valve being actuated by-the tal e-up roll. 1 a 9. In an instrument of the characterdescribed, the combination of take-up and music rolls, a tracker board transmission mechanism including a driven member for each roll, a shiftable driving shaft carrying drivinoelements arranged to alternately en gage the driven members of said transmission mechanisms, respectively, a clutch for,

one of said transmission mechanisms, a rewind pneumatic connected with the trackerboard of the instrument, meansfor connecting said pneumatic with said driving shaft and said clutch, valve mechanisms applied to sa d pneumatic for controllingthe same,

each of said valve mechanisms including a suction chamber, a valve chamber communicating by ports w th said suctionj chamber and the atmosphere,a valve controlling said ports and a chamber communicating with the atmosphereand containing a diaphragm for actuating the valve, an air conduit connecting the diaphragm chamber of one of said valve-mechanisms with the tracker board,-

the'pne umatic containing a valve passage communicating at one end with saidconduit and at its other end with the valve chamber of the other XitlVB-iiieCliflni5111, and a valvefor controlling the admission of atmosphere to thediaphragm Cl11111be1."0f the I last-named valve-mechanism, said controlling valve being actuated by the take-up rollz 10.1n an instrument of the character described, the combination of take-up and music rolls, a tracker board transmission mechanism including a driven member for aich roll, ashiftable driving shaft carrying driving elements arranged to alternately engage the driven members of said transmis sion mechanisms, respectively, for winding and rewindingthe music sheet, a clutch for one of saidtransmission mechanisms, a rewind pneumatic connected with the tracker board of the instrument, means for connecting said pneumatic with'said driving shaft and said clutch, valve mechanisms applied to said pneum-atic for controlling the same, each of said valve mechanisms including a suction chamber,-a valve chamber communicating by ports with said suctionchamber and the atmosphere, a valve controlling said ports and a chamber communicating with the atmosphereand containinga diaphragm for actuatingthe valve, means for connecting the diaphragm chamber of one of said valve mechanisms with the tracker board, a valve block'disposed adjacent to the take-up roll and containing an air inlet port com municating with the diaphragm chamber of the other valve mechanism, a valve applied to said valve block for controlling th-eadinission of atmosphere thereto, and a connection between said valve and the take-up roll for effecting the opening of the valve at the end of the rewind operation. j

11. In an instrument of the character described, the combination of take-up and music'rolls, driven members for said rolls, automatic driving mechanism including shiftable driving members movable in oppo site directions into and out of engagement 7 with said driven members for alternately rotating said rolls in opposite directions, a clutch associated with one of said rolls,automatic shifting means for said driving members and saidclutch, and manual means independent of said automatic shifting means for moving said clutch relatively to said shifting members. g I 12.- In an instrument of the character described, the combination of take-up and music rolls, driving and rewind wheels for alternately rotating said-rolls, an oscillating shaft carrying wheels arranged to engage withsaid driving and rewind wheels, respectively, a clutch associatedwith the takeup roll including a shiftable actuating meniber connected with said shaft, meansfor automatically oscillating said shaftand shifting said clutch member, and means for manually actuating the clutch memberindepend ently of the oscillating shaft. p

13. In aninstrument of the character de scribed, the combination of take-up and music rolls, driving and rewind wheels for alternately rotating said rolls, an oscillating shaft carrying wheel's arranged to engage with said driving and rewind wheels, respectively, a clutch associated with the take-up roll including a shiftable actuating member connected with said shaft, means for automatically oscillating said shaft and shifting saidclutch member, means'for manually ac- {mating the clutch member independently of the oscillating shaft, including a shifting bar, and a rock lever connected to said clutch actuating member and said bar.

14. In'an instrument of the character described, the combination of take-up and music-rolls, driving, and rewind wheels for alternately rotating said rolls, an oscillating shaft carrying wheel-s arranged to engage with said driving and rewind wheels, respectively, a clutch associated with the takeup roll including a shiftable actuating member, a link connecting said shaft with said inembeiya pin and slot connection between the latter and said link, a manually shiftvablebar, and a rock lever, one arm of said lever engaging said shiftable bar and its other arm engaging said pin.

' 15. In an instrument of the character described, the combination of take-up and music rolls, a tracker board, transmission mechanism for each roll, a shiftable driving shaft carrying driving elements arranged to alternately engage the transmission mechanisms, respectively, a clutch for one of said transmission mechanisms, a shiftable lever for said clutch, a rewind pneumatic connected with the tracker board of the instrument for effecting the automatic shifting of the driving shaft and the clutch lever to rewind and playing positions, respectively, links connecting said driving shaft andsaid clutch lever with said pneumatic, and means for manually actuating said clutch lever independently of the driving shaft and the pneumatic.

16.111 an instrument of the character described, the combination of take-up and music rolls, a tracker board transmission mechanism including .a driven member for each roll, a. shiftable driving-shaft carrying driving elements arranged to alternately engage the driven members of said transmission mechanisms, respectively, a clutch for one of said transmission mechanisms, a shiftable lever. for said clutch, a rewind pneumatic connected with the tracker board of the instrument for eifecting the automatic shifting of the driving shaft and the clutch lever to rewind and playing positions,

respectively, links connecting said driving shaft and said clutch lever with said pneu matic,means for manually actuating said clutch lever independently of the driving shaft and the pneumatic, and separate means for yieldingly maintain ng said pneumatictogether with said driving shaft and said clutch lever inrtheir operative playing posi-. tions, respectively. v

. 17.- In an instrument of the character described, thezcombination of a wind chest, a suctionbellows, take-up and music rolls, automatic driving mechanism including shifta le; members for alternately rotating said rolls-in opposite directions, a clutch associated with one of said rolls, a rewind pneumatic'connec ted with the suction bellows of the instrument for automatically shifting said .members and said clutch, a cut-oifvalve interposed between the suction bellows and the wind chest of the instrument, manual means independent of'said'automatic shifting means for moving said clutch relatively to said shiftable members, and a controlling valve'for said cut+off valve actuated by said manually-shiftable means.

18.-In an instrument of the character described, the combination of a wind chest,

a suction bellows, takeup and music rolls,

automatic driving mechanism including shiftable members'for alternately rotating said rolls in opposite directions, a clutch associated with one of said rolls, a rewind pneumatic connected with the suction bellows of the instrument forautomatically shifting said members'and said clutch, a cut-off valve interposed between the suction bellows and the wind chest of the instru- V ment, and an automatically-actuated valve 'manuallyeshiftable means.

interposed between the suction-bellows and the wind chest of the instrument, manual 'means independent of said automatic shifting means forinoving said clutch relatively to said shiftable members, a valve box interposed between saidpneumatic and said cutoff valve and having anair inlet, and a pairof valves applied to said valve box, one of said valvesbeing automatically controlled and the other being operated by said 20. In an instrument of the character described, the combination of a wind chest, a

' T suction bellows, take-up and music rolls,

driving andrewind wheels for alternately rotating said rolls, an oscillating shaft carrying wheels arranged to engage with said driving and rewind wheels, respectively, a

clutch associated with the take-up roll including a shiftable actuating member connected with said shaft, a cut-off valve interposed between thesuction bellows and WlIlCl chest of theinstrument, a valve block having an a r inlet port communicating with said cut-ofi' valve, a valve for said port, and

means formanually' actuating the clutch memberandsaid valve including a shifting bar, and a rock lever operatively connected to said shifting bar and said clutch actuating member, the valve controlling said inlet port being arranged to be actuated by, said rock lever. 1 1

21.1n an instrument of the character; de-

scribed, the combination of a wind chest, a

suction bellows, take-up and music rolls, drivingand rewind wheels for alternately rotatingisaid rolls, an oscillatingshaft carrying wheels arranged to engage with said drivingand rewind wheels, respective ly, a clutch associated with the take-up roll including'a.shiftable actuating member connected withsaid shaft, a rewind pneumatic for automatically shiftingi'said shaft and said clutch, a cut-off valve interposed between the suction bellows and the windchest of the instrument, controlling valves interposed betweensaid suction bellows and said pneumatic and between the latter andsaid cut-off valve, respectively, and means for manually actuating said clutch member and said controlling valves inunison.

22. In an instrume-nt of the character described, the combination of a. wind chest, a suction bellows, takeup and music rolls, driving, and rewind wheel-s for. alternately rotating said rolls, anoscillating shaft carrying wheels arranged to engage with said driving and rewind wheels, respectively, a clutch associated with they take up roll and including a shifta-ble actuating member connected with said, shaft, a rewind pneu matic connected with the'suction bellows of the instrument for' automatically shifting said shaftand said clutch'member,means for, yieldingly maintaining said pneumatic,

saidshaftand said clutch member in their playing positions, duplex valve-mechanisms applied to the pneumatic for regulating. the collapse and inflation thereof at the 'en d of the playing and rewind operations, one of said duplex valves being connected with the tracker board of the instrument, an air inlet valve controlled by the take-up rolland connected with the other duplex valve. a cut-off valve interposed betweenthe suction bellows and'the wind chest. and an automatic valve connected with said'pneumatic for controlling said cut-ofi' valve. 7

23. In an instrument of the character described, the combination of a, wind chest, a suction bellows, take-up and music rolls, driving and rewind wheels for alternately rotating said rolls, an oscillating shaft carryingwheels arranged. to engage with said driving and rewind'wheels, respective- 1y, a clutch associated with the take-up roll and including a shiftable actuating member connected with said shaft,- a rewind pneumatic connected with the suction bellows of the instrument for automatically shifting said shaft and said clutch-member, means for yieldingly maintaining said pneumatic, said shaft and said clutch member in their playing positions, duplex valve-mechanisn1s applied to the pneumatic for regulating the collapse and inflation thereof at the end of the playing and rewind voperations, one of said duplex valves being connected with the tracker board of the instrument, an air inlet valve controlled by the take-up roll and connected with the other duplex valve, a cutoff valve interposed between the suction bellows and the wind chest, an automatic valve connected with said pneumatic for controlling said cut-ofl valve, means for manually shifting said clutch actuating member independently of said oscillating shaft, and avalve separate from said automatic valve for controlling said cut-ofi valve and operated by said manually shiftable means.

JOHN E. GRAF. 

